Double twisting spindle



Jan. 3, 196.7 K. NIMTZ DOUBLE TWISTING SPINDLE 3 Sheets-Sheet 1 FiledDeo. 15, 1964 l 1 I HHHIHH Jan. 3, 1967 K. NIMTZ DOUBLE TWISTING SPINDLE5 Sheets-Sheet 2 Filed Deo. l5, 1964 Jan. 3, 1967 K. NIMTz DOUBLETWISTING SPINDLE 3 Sheets-Sheet 5 Filed Deo. l5, 1964 United StatesPatent C) 3,295,305 DOUBLE TWISTING SPHNDLE Klaus Nimtz, Krefeld,Germany, assignor to Palitex Proiect-Company Gtmdblli., Krefeld, GermanyFiled Dec. l5, i964, Ser. No. 418,444 Claims priority, applicationGermany, Dec. 2l, )1963,

is claims. (ci. s7-sa49) The present invention relates to spindles and,more specifically, to two-for-one twisting spindles or double twistingspindles. In connection with this type of spindles, it is known tosubject the thread or yarn to a moistening treatment by contacting thethread or yarn directly with a liquid or a vaporous medium. In additionthereto, it is known to treat the thread or yarn with a finishing orbrightening agent over which the thread passes and from which the threador yarn absorbs the substance. These heretofore known treatments areintended to improve the sliding property of the thread or yarn duringthe processing thereof and to hold said thread or yarn smooth andflexible to thereby prevent thread breakage and the formation of dust.

It is an object of the present invention to provide a two-for-onespindle which will make it possible to treat the thread withdrawn from abobbin with a wetting agent or with a finishing or brightening agent ata particularly suitable section.

It is another object of this invention to provide a twofor-one spindle,which will permit subjecting the thread or yarn to a moisteningtreatment prior to the starting of the twisting operation andspecifically, where the thread is reversed in its direction of movement.

These and other objects and advantages of the invention will appear moreclearly from the following specification in connection with theaccompanying drawings, in which:

FIGURE 1 diagrammatically illustrates partly in section a two-for-onespindle with a cylindrical body composed of a hard moistening orbrightening agent (Hartavivage);

FIGURE 2 illustrates partly in section a two-forone spindle with acylindrical body forming an annular cup adapted to receive and store awetting agent;

FIGURE 3 shows partly in View and partly in section the upper end of ahollow spindle shank with a paraboloid of rotation placed on the upperend of a hollow spindle shank and adapted to release a wetting agent, afinishing or brightening agent, or the like;

FIGURE 4 illustrates partly in view and partly in section a paraboloidof rotation similar to that of FIGURE 3 but somewhat modified thereoverinasmuch as the spindle shank is, in contrast to that of FIGURE 3, notstraight;

FIGURE 5 represents a further embodiment of the present inventionequipped with a relling means;

FIGURE 6 shows the arrangement of a material adapted to exert a suctionand located on the dish-shaped disc of the paraboloid of rotationaccording to FIGURE 5.

A two-for-one spindle according to the present invention ischaracterized primarily in that a cylindrical body or the like adaptedto release a wetting agent, a nishing or brightening agent or the like,is mounted on that end of the hollow spindle shank which is locatedabove the bobbin. The upper end face of said cylindrical body is shapedin conformity with the body of rotation which is described by the threadwhich, while being withdrawn from the bobbin, enters the hollow spindleshank. When the thread or yarn is wound olf from the bobbin in upwarddirection and is then deviated downwardly into the hollow spindle shank,the thread or yarn automati- Patented Jan. 3, i967 cally at a certainpressure at the deviating point contacts the end face of the wettingagent or finishing or brightening agent whereby the thread or yarnabsorbs a certain quantity of the said wetting or finishing agent, withthe result that an electrostatic charge of the thread or agent and theparts contacted thereby will be avoided while the thread or yarn itselfis made more flexible.

In conformity with the invention, the cylindrical body placed upon thehollow spindle shank may consist of a hard finishing or brighteningagent. Such cylindrical body may when used up, be replaced by a newsimilar body. For purposes of protecting the cylindrical body consistingof a hard nishing or brightening substance, and for purposes of guidingthe thread or yarn over the upper end face of the cylindrical body, thelatter may be surrounded by a bushing extending up to the upper endface, said bushing being connected to the hollow spindle shank.

According to a further development of the present invention, thecylindrical body may be in the shape of an annular cup adapted to befilled with a liquid wetting agent or the like while being provided atits upper end with an absorbent closure member and wick means extendinginto the interior of said cup and the wetting agent stored therein. Theupper end face of said closure member is adapted to the shape of a bodyof rotation described by the thread or yarn withdrawn from the bobbinand deviated into the hollow spindle shank.

According to a further development of the invention, the saidcylindrical body releasing the wetting agent or finishing or brighteningagent may additionally release wetting substance to the thread or yarnpassing substantially vertically through the hollow shank of thespindle. More specifically, in such an instance the cylindrical body mayin the form of a hollow paraboloid of rotation be placed upon the hollowspindle shank and have its jacket provided with a helical grooveprovided at least at its upper third with passages through which awetting agent, a finishing or brightening agent or the like received bythe hollow paraboloid of rotation may be released onto the threadengaging the paraboloid of rotation.

When the helical groove rises in the direction of rotation of theentering thread or yarn, the helical groove aids in the withdrawal ofthe thread, while the threads absorb the wetting agent or the like whichpasses through said passages in the jacket within the range of thehelical groove. The helical arrangement of the passages assures auniform thread weight, whereas the helix itself brings about a uniformmovement of the thread and thereby also a uniform wetting of the thread.

In particular instances it has proved advantageous to provide the helixof the jacket of the paraboloid of rotation so that the helical grooveruns counter to the direction of rotation of the thread in a risingmanner. This likewise improves the movement of the thread. A certainbraking of the thread will occur which improves the engagement of thethread with the paraboloid of rotation and thereby also improves theabsorption of wetting `agent or the like.

According to a further development of the invention, the hollowparaboloid of rotation may be provided with a transverse wall and in theplane of said Wall may have a protruding step with partial annular slotson the surface. Wetting agent or the like may be filled into thecontainer through said partial slots whenever the supply in saidcontainer runs low. Thus, each paraboloid of rotation may haveassociated therewith a supply nozzle connected to a central conduit forfilling wetting agent, finishing or brightening agent or the like intothe container.

A still further development of the invention consists in placing theparaboloid of rotation in an axially resilient manner upon the hollowshank of the spindle so as to be able to yield somewhat in case ofdifferences in the thread tension whereby the thread tension will remainsubstantially uniform. This likewise contributes to a uniform movementof the thread and permits the paraboloid of rotation which releases thewetting agent, finishing or brightening agent or .the like, to aid in animproved manner in the smooth movement of the thread.

Referring now to the drawings in detail and FIG. 1 thereof inparticular, the arrangement shown therein comprises a two-for-onetwisting spindle in which the bobbin disc 3 supports a bobbin 4 placedupon a bobbin spindle or bobbin sleeve 5. Bobbin disc 3 is in customarymanner located above the turntable (not shown in the drawing). Bobbin 4is located within a protective basket 6. As will be seen from thedrawing, bobbin sleeve 5 is provided with an axial thread passage 7 andhas a cylindrical recess 8 at its upper end. Inserted into said upperwidened end of passage 7 is a tubular member 9 forming the spindleshank. Tubular member 9 forms that end of spindle shank generallydesignated 10, which extends above bobbin 4.

In conformity with FIG. 1, a slidable bushing 11 is placed upon thehollow spindle shank 9 and is provided with a radially extending liange12. Bushing 11 is supported by a pressure spring 13 which extendsdownwardly into the cylindrical recess 8 of bobbin sleeve 5 and restsupon the body 14 of said recess. Flange 12 supports a cylindrical body15 consisting of a finishing substance, brightening substance or thelike, said cylindrical body 15 surrounding tubular member 9. The upperend face 16 of cylindrical body 15 has `a conical contour so that saidcontour corresponds approximately to the shape of a body of rotationdescribed by the thread or yarn 17 being withdrawn from bobbin 4.Cylindrical body 15 is surrounded by a bushing 26 extending downwardlyinto recess 3 and by means of step 27 resting upon the upper edge ofbobbin sleeve 5. The upper edge of bushing 26 is rounded and serves inguiding thread 17 passing thereover while primarily determining theconical shape of end face 16 of cylindrical body 15.

When thread 17 is being withdrawn from bobbin 4 in upward direction inthe manner illustrated in FIG. 1, it will at the upper end face 18 oftubular member 9 be deviated downwardly and move through the axial bore7 downwardly to the thread storage disc. During this operation, thread17 will contact the upper end face 16 of cylindrical body 15 consistingof hard finishing or brightening substance and will absorb saidsubstance whereby the thread is smoothed and made more flexible.Cylindrical body 15 will continuously be raised to the extent to whichfinishing or brightening substance or the like is absorbed by thread 17from cylindrical body 15. In this way, cylindrical body 15 consisting offinishing substance, brightening substance or the like can approximatelybe entirely used up. Cylindrical body 15 will assure a thread treatmentover a long period of time and has relatively only seldom to be replacedby a new cylindrical body of hard finishing or brightening substance.

It is, of course, to be understood that the body 15 composed of hardfinishing or brightening means may also be screwed onto the upper end ofbobbin sleeve 5, and this screw connection may be changed manually fromtime to time in conformity with the withdrawal substance from said body.

While FIG. l shows cylindrical body 15 as being supported by spring 13so that said body 15 will automatically rise in conformity with theconsumption of body 15, it is, of course also possible to arrange thecylindrical body 15 stationarily and to make the upper end of spindleshank 9 axially displaceable by supporting the same by a spring or thelike. In this way, the upper end of spindle shank 9 will be presseddownwardly against the thrust of spring 13 by the thread tension inconformity with the consumption of the end face 16 of body 15.

Referring now to FIG. 2, the arrangement shown therein differs from thatof FIG. 1 primarily in that the cylindrical body generally designated 25forms an annular cup 24 placed upon spindle shank 10 and forming a partof bobbin sleeve 5, and also placed upon hollow shank 9 forming anextension of spindle shank 10. Cup 24 has a shoulder 20 by means ofwhich it rests on bobbin sleeve 5. As will be seen from the drawing, cup24 extends downwardly into a cylindrical recess 8i. The interior of cup24 contains a liquid wetting substance or liquid finishing orbrightening substance 23. Cup 24 has its top closed by a closure member21 of absorptive material such as natural sponge material, naturalporous material, felt, felt mate, felt cushion, polyurethane foam, foamplastic material, synthetic porous material, plastic foam, expandedplastic material, and the like. Partly located in and extending fromclosure member 21 is a plurality of wicks 22 which extend to the bottom19 of cup 24. Wicks 22 absorb wetting substance or finishing orbrightening substance so that closure member 21 is continuouslysaturated therewith and is adapted to yield wetting substance orfinishing or brightening substance or the like to thread 17. Upper endface 16 of closure member 21 is of a conical contour similar to theupper end face of cylindrical body 15 of FIG. 1. Thus, also the upperend face of closure member 21 is in conformity with the shape of a bodyof rotation as will be described by thread 17 being withdrawn frombobbin 4. It will thus be assured that the closure member 21 issaturated continuously with a wetting substance and that the wettingsubstance is transmitted to thread 17 passing over end face 16 ofclosure member 21. It will also be appreciated that in addition tocontinuously suppling a wetting, finishing or brightening agent tothread 17 being withdrawn from bobbin 4, the supply of said substance iseffected at the most sensitive portion of the thread path, viz. wherethe thread is greatly deviated and enters spindle shank 9.

When the wetting agent or the like in cup 24 has been nearly consumed,no difficulty exists in refilling said cup. Due to the fact that thewicks extend approximately to the bottom of cup 24, the wettingsubstance can practically be used up completely.

Referring now to FIG. 3, only the upper end of bobbin 4 is shown. In thearrangement of FIGS. 3 to 6, hollow spindle sleeve 9 extends axiallythrough bobbin 4. A hollow paraboloid of rotation generally designated28 is placed upon hollow spindle shank 9. The outside of said paraboloid2S, and more specifically, its jacket 30, is provided with a helicalgroove 29 which rises in a direction opposite to the direction in whichthe thread 17 circulates. At about the upper third of said jacket 30,the paraboloid 28 is within the range of helical groove 29 provided withpassages 31. The interior of paraboloid 28 is by means of a transversepartition 32 subdivided into a lower chamber 33 and an upper chamber 34.Upper chamber 34 is filled with an absorptive material 35, for instancean absorptive foam material or the like, as described above inconnection with FIG. 2. The lower chamber 33 contains a liquid wettingsubstance 36 which by means of one or more wicks 37 is drawn upwardlythrough partition 32 so that the absorptive material 35 will becurrently saturated with a wetting substance of a finishing substance,brightening substance, or the like. Lower chamber 33 serving as storage-chamber for the wetting agent or the like thus currently conveyswetting substance or the like through passages 31 onto the circulatingthread 17 which engages jacket 30 at least along the upper curvedsurface of paraboloid 28. At the same time, the circulating thread 17causes a suction effect thus aiding the discharge of wetting substanceor the like from the interior of chamber 34 through passages 31.

In conformity with FIG. 3, jacket 30 of paraboloid 28 extends uniformlyand step-free from the top toward the bottom. The bottom is providedwith a depression 38 having an opening 40 covered by an elastic valvehose section 39. Hose section 39, while covering opening 40, stillpermits the entry of wetting agent or the like by means of a pump intostorage chamber 33 for filling the same.

The arrangement shown in FIG. 4 differs from that of FIG. 3 in that thespindle shank 9a is within the range of upper chamber 34 curved inopposite directions a plurality of times. Furthermore, radial bores 49are provided in shank 9a to establish communication between the interiorof hollow spindle shank 9a and chamber 34. Wetting agent or the likepasses through bores 49 from the wetting agent permeated material 35into spindle shank 9a and distributes itself along the inner surfacethereof while this distribution is aided by the vertically moving thread17. This is particularly so because thread 17, due to the curvatures 9band 9c of shank 9a, will positively engage the inner wall surface ofshank 9a at a plurality of places and will thus pick up wetting agent orthe like from said inner wall surface of shank 9a and will at the sametime distribute said wetting agent uniformly over said wall surface.

According to the embodiment of FIG. 5 paraboloid 28a is along the planeof partition 32 provided with a step 41 which at the upper side haspartial annular slots 42 through which wetting agent 36 or the like canbe filled.

Furthermore, according to FIG. 5, below paraboloid 28a there is provideda disc 43 spaced from the bottom of said paraboloid. The outer marginalportion of disc 43 protrudes beyond the outer circumference ofparaboloid 28a. Within the plane of disc 23 there is provided at leastone radial bore 44 which communicates with the interior of spindle shank9 so that wetting agent or the like received by disc 43 will be ablethrough passage or passages 44 to pass into the interior of spindleshank 9 and to additionally moisten thread 17 vertically passing throughshank 9.

As will be evident from FIG. 5, the filling of lower chamber orreservoir 33 with wetting agent or the like, and the charging of wettingagent or the like onto disc 43 is effected by means of a pigtail-shapedtubular thread guiding member 45. The free end of member 45 forms aneccentrically downwardly directed drip-nozzle 46 releasing the wettingagent or the like. The drops 47 released by member 45 first hit thecurved outside of paraboloid 28 and flow partly on said outside surfaceand partly in helical groove 29 `downwardly to step `41 where they passthrough slots 42 into the interior of chamber 33 thereby supplementingthe wetting agent or the like in reservoir 33. A portion of the wettingagent or the like passes over step 41 `or through helical groove 29further downwardly to the lower outer marginal portion of paraboloid 28.From he-re the said substance drops onto disc 43 which passes thewetting agent or the like through radial bores 44 into the interior ofspindle shank 9 where an additional wetting of the thread passingvertically through shank 9 will occur.

The embodiment illustrated `in FIG. 6 differs from that of FIG. 5primarily .in that it lacks step 41, Vand that between disc 43 and thebottom of paraboloid 28 is filled with an annular disc or the like 4S ofabsorptive material. This disc is adapted to store the wetting .agent orthe like which collects on disc 43 and to release said wetting agent orthe like uniformly through bores 44 into the interior of spindle shank 9and thereby to thread 17 in the interior of shank 9. This arrangementmakes the entry of wetting agent or the like into the interior of thespindle shank more uniform.

The arrangement of the protruding step as well as the arrangement ofdisc 43 with or without absorptive material below paraboloid 28, 28amakes it possible at a standstill of the spindle automatically to refillreservoir 33 with wetting agent, finishing agent, brightening agent orthe like.

It may also be mentioned that the pigtail-shaped mem- 6 bers `45 of allor a plurality of spindles may be supplied from a common supply pipe. Inthis instance, each member 45 would have associated therewith meteringvalves.

As will be evident from FIGS. 3 to 6, paraboloid 28 greatly raid-s inthe smooth movement of thread 1`7 being withdrawn from the bobbin, andfurthermore forms a body furnishing wetting agent or the like to thread17 while in conformity with FIGS. 4 to 6 an additional wetting of thread17 may be effected while said thread passes through the interior ofhollow shank 9.

It is, of course, to be understood that the present invention is, by nomeans, limited to the particular embodiments of the inventionillustrated in the accompanying drawings, but also comprises anymodifications within the scope of the appended claims. Thus, if desired,paraboloid 28, 28a maybe axially resiliently located on spindle shank 9in order to be able to yield to a certain extent when differences in thetension of the thread should occur. In this way, the `thread tensionwill remain approximately uniform. Moreover, such an arrangement alsocontributes to a uniform passage of the thread.

It may also be added with respect to FIGS. 1 and 2 that the upper endcontour of bodies 16 and 21 need not precisely be predetermined inconformity with the contour of the body of rotation described by thread17 being withdrawn from .bobbin 4, but that the said upper end contourwill shape itself in view of thread 17 carrying off the material ofbodies 16, 21.

lt is furthermore to be understood that the term thread treating meansas it appears in the claims covers any solid as well as liquid threadtreating means employed in connection with the tre-ating of threadsbeing spun.

What I claim is:

1. A two-for-one spindle, which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with an axialthread passage therethrough, and a body of solid thread treating meanssurrounding said passage and having a surface portion exposed toward theoutside for contact with a thread prior to such thread entering saidpassage.

2. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with an axialthread passage therethrough, a body of solid thread treating nie-anssurrounding said passage and having a surface portion exposed toward theoutside for contact with a thread prior to such thread entering saidpassage, `and sleeve means connected to said spindle means and coveringthe peripheral area of said body while leaving said surface portionuncovered.

3. A two-for-one spindle which includes: substantially vertical spindlemeans `adapted to receive and support a `bobbin :and :provided with anaxial thread passage therethrough, a body of solid thread treating meanssurrounding said passage and having a surface portion exposed toward theoutside for contact with .a thread prior to the latter entering saidpassage, and means resiliently supporting said body and continuouslyurging the same in upward direction.

4. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with an axialthread passage therethrough, a body of solid thread treating meanssurrounding said passage, said body having a surface portion exposedtoward the outside for contact with a thread prior to the latterentering said passage, sleeve means slidably mounted -on said spindlemeans in axial direction thereof and supporting said body, and springmeans resting on said spindle means and supporting said sleeve means andcontinuously urging said body upwardly.

`5. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with an axialthread passage therethrough, said spindle means comprising chamber meansadapted to receive a thread wetting fluid for treating a thread to bepassed thnough said passage, Ifluid absorbing closure means closing the-upper portion of said chamber means and having its upper area exposedfor contact with a thread prior to the latter entering said passage,yand wick means leading Ifrom the lower portion of said chamber meansinto said closure means, said exposed area tapering in upward directionat an angle to accommodate the angle at which a thread being withdrawn`from a bobbin on said spindle means is to pass into said passage.

`6. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive a bobbin and provided with an axial threadpassage therethrough, a paraboloid-shaped body of rotation adapted toreceive a thread treating fluid and to convey the same to a thread to bepassed through said passage, said paraboloid-shaped body having itsouter peripheral surface provided with a helical groove, said body beingprovided with passa-ge means within the area of said groove f-orestablishing communication between the outer surface of saidparaboloid-shaped body and the interior thereof to thereby convey threadtreating uid from the interior of said parabioloid-shaped body to saidouter surface thereof for contact with a thread being withdrawn `from abobbin on said spindle means and passed over said -outer surface intosaid passage.

7. A lspindle according to claim 6, in which said helical groove risesin a direction opposite to the direction of rotation of a thread to bewithdrawn from a bobbin on said spindle means and to be passed throughsaid passage.

8. A two-for-one spindle which includes: substantially vertical spindlemeans a-dapted to receive a bobbin and provided with an axial threadpassage threethrough, a hollow paraboloid-shaped body iof rotationsurrounding said spindle mea-ns and having a partition dividing saidbody into a lower chamber adapted to receive a thread treating fluid andinto an upper chamber, uid absorbing means arranged in said upperchamber, and wick means extending from said lower -chamber intro saidupper chamber, the outer wall of said body being provided with groovemea-ns, the outer wall of said upper chamber being in the area of `saidgroove means provided with passage means leading from the outside ofsaid upper chamber to the interior thereof for conveying thread treatinguid from the inside of said upper chamber to the outside thereof.

9. A spindle according to claim 8, in which said spindle means withinthe area of said upper chamber is provided with conduit means forestablishing -communication between the interior of said upper chamberand said passage.

10. A spindle according to claim 8, in which said spindle means has aplurality of oppositely curved bends Within the range of saidparaboloid-shaped body.

11. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with an axialthread passage therethrough, a hollow paraboloid-,shaped body supportedby and surrounding said spindle means, partition means dividing saidparaboloid-shaped body into `an upper chamber and into a lower chamberadapted t-o receive thread treating fluid, said paraboloid-shaped bodybeing provided in the plane of said partition means with a-n outwardlyextending step having partial annular slots therein for establishingcommunication between the outside wall surface of said upper chamber andthe interior orf said lower chamber, fluid absorbing means provided insaid upper chamber, and wick means extending yfrom said lowerchamberinto said upper chamber, the outer wall surface of saidparaboloid-shaped body being provided with groove means and with pasagemeans therethrough for establishing communication between the outside ofsaid paraboloid-shaped body and the inside of said upper chamber.

12. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive and support a bobbin and provided with anlaxial thread passage therethrough, a hollow paraboloid-shaped bodyarranged at the upper portion of and supported by said spindle meansa-nd surrounding the same, partition means dividing the interior of saidbody into an upper chamber and into a lower chamber adapted to receivethread treating iiuid, fluid absorbing means provided in said upperchamber, wick means extending from said lower chamber into said upperchamber, the outer surface of said parab-oloidshaped body being providedwith groove means and having passage means therethrough for establishingcommunication between the inside of said upper chamber and the -outsideof the wall portion confining said upper chamber, dish-shape plate meansarranged below said paraboloid-shaped body and protruding beyond themaximum diameter thereof, and conduit means leading lfrom saiddish-shaped plate means into said passage means.

13. A spindle according t-o claim 12, which includes fluid absorbingmaterial interposed between the bottom of said lower chamber and saiddish-shaped plate means.

14. A two-for-one spindle which includes: substantially vertical spindlemeans yadapted to receive a bobbin and provided with an axial threadpassage therethrough, a hollow paraboloid-shaped body surround-ing theupper portion o-f. said spindle means and being supported therebypartition means Idividing said body into an upper chamber and into alower chamber adapted to receive thread treating uid, wick meansextending yfrom said lower chamber Iinto said upper chamber, fluidabsorbing means arranged within said upper chamber, the outer surface ofsaid paraboloid-shaped body being grooved, conduit means leading `fromthe outer surface of said upper chamber into the interior thereof, andtubular thread guiding means arranged above said paraboloid-shaped bodyand having an opening for releasing thread treating uid onto the outsideof Asaid paraboloid-shaped body.

1S. A two-for-one spindle which includes: substantially vertical spindlemeans adapted to receive a bobbin and provided with axial thread passagemeans therethrough, a hollow paraboloid-shaped body surrounding theupper portion of said spindle means and comprising an upper chamber anda lower chamber adapted to receive thread treating fluid, the outer wallsurface of said body being provided with groove means, said body alsobeing provided with passage means therethrough for establishingcommunication between the interior of said upper chamber and the outersurface thereof, and means supported by said spindle means andresiliently supporting said paraboloid-shaped body.

References Cited by the Examiner FOREIGN PATENTS 3/11934 Germany. 7/1956Great Britain.

1. A TWO-FOR-ONE SPINDLE, WHICH INCLUDES: SUBSTANTIALLY VERTICAL SPINDLEMEANS ADAPTED TO RECEIVE AND SUPPORT A BOBBIN AND PROVIDED WITH AN AXIALTHREAD PASSAGE THERETHROUGH, AND A BODY OF SOLID THREAD TREATING MEANSSURROUNDING SAID PASSAGE AND HAVING A SURFACE PORTION EXPOSED TOWARD THEOUTSIDE FOR CONTACT WITH A THREAD PRIOR TO SUCH THREAD ENTERING SAIDPASSAGE.